diff --git a/pyproject.toml b/pyproject.toml
index e0d376c6..8ab0bc14 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,3 +52,16 @@ exclude_lines = [
     "pragma: no cover",
     "if TYPE_CHECKING:",
 ]
+
+[tool.isort]
+forced_separate = [
+    "tests",
+    "pytest_django",
+    "pytest_django_test",
+]
+combine_as_imports = true
+include_trailing_comma = true
+line_length = 79
+multi_line_output = 5
+lines_after_imports = 2
+extend_skip = ["pytest_django/_version.py"]
diff --git a/setup.cfg b/setup.cfg
index 920931db..f34320bb 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -58,13 +58,3 @@ pytest_django = py.typed
 ignore = W503
 max-line-length = 99
 exclude = lib/,src/,docs/,bin/,pytest_django/_version.py
-
-[isort]
-forced_separate = tests,pytest_django,pytest_django_test
-combine_as_imports = true
-default_section = THIRDPARTY
-include_trailing_comma = true
-line_length = 79
-multi_line_output = 5
-lines_after_imports = 2
-extend_skip = pytest_django/_version.py